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(No Model.) 2 Sheets-Sheet 1 M. GALLYV MECHANICAL MUSICAL INSTRUMENT. No. 351,172. Patented Oct. 19, 1886.

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M. GALLY. MECHANICAL MUSICAL INSTRUMENT. No. 351,172. Patented Oct. 19, 1886.

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3 Inventor. I @M74 UNITED STATES PATENT OFFICE.

MERRITT GALLY, OF NEW ).'(.)RK,'X. Y.

MECHANICAL MUSlCAL INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 351.172, dated October 19, 1886.

Original applit-ation filed April 23, 1885, Serial No. 163,190. Divided and this application filed October 24, 1885. Serial No. 180,845. (No model.)

Z 0 dZZ whom it may concern:

Be it known that I, MERR-rr'r GA'LLY, residing at New York city, in the county of New York, and State of New York, have invented certain new and useful Improvements in Mechanical Music-Sheet Motors,of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to sheet motors for mechanical musical instruments.

The object of the invention is to connect the music-sheet winder or otherpropelling device to a wind-motor, and the motor with the bellows of the instrument, or with an additional bellows connected with the pedal or pedals of the instrument; also, to connect with the wind motor a valve and an index for controlling and indicating the time of the music.

Iirthe drawings, Figure l is a plan view of a music-sheet and its motor. Fig. 2 is a partial elevation and partial section of motor and bellows attachment. Fig. 3 is an end elevation of friction retarder. Fig. 4 is a plan view of the cylindrical casing of motor. Fig. 5 is a side view, partly sectional, of motor wheel, with valve and adjusting-pointer. Fig. 6 is a plan view, partly sectional, of the valve with the adjusting pointer and index. Fig. '7 is a diagram of windway and automatic valve.

D indicates a fan-wheel, which is inclosed in cylindrical casing G, and is operated, prefer ably, by the exhaust of air, but may be operated by compressed air.

The pedal A and bellows B may be of any usual construction.

The gear K on the shaft of the fan-wheel meshes with gearZ on shaft to, and through a gear on this shaft the take-up roll E is driven, and by the n'ioveinent of the take-up roll the music is drawn from roll F.

A pointer, a, on shaft 0 can be swung with the shalt, and thus indicate on sector index b the position of valve c,wliich turns with shaft 0 and opens passage 6 more or less, thus do termining the amount'of air which may pass through the motor. By swinging the pointer a and valve 0/ the opening 2' may be l'lltldfi'tO pass such an amount otair as will regulate the movement of the windmotor to the desired speed.

It is apparentfrom Figs. 2 and 5 that the valve a may be at either side of passage d, provided the automatic valve j is not used.

In order that the graduated are 12 maybe graded to represent metronome, or other desired time, construct the valve a with an opening, J. therethrough, as shown in Fig. 6, and make the opening '1' of the valve-seat varying in width at different points, as shown by the dotted lines. The shape of the opening 1 may be varied according to the kind of time or movement to be produced, and the arcb may he figured to correspond, and also corresponding figures placed upon the music-sheet.

The port J of valve a, when moved to the narrow end of the opening i, will pass only a snfficient quantity of air to drive the motor at its lowest speed, the amount being gradually increased as tlicpointer is moved to the right on are I). 4

A simple cut-oft valve without the opening J may be used in connection with port 1 of the valve-seat; but the valve as shown is preferable, as the movement may be stopped with the pointer at either end of the graduated arc, and the construction of the valve and ports be more easily made to produce the proper gr'aduations in time.

The bellows B, Fig. 2, may be that which operates the musical instrument, or it may be an additional bellows used only for operating the motor. The bellows-reservoir may be 0peratcd in connection. with either spring or weight, as the case may require. it the tension of the air of the bellows is variable,I use an automatic valve, j, Fig. 5, to more or less open and close the windway i in proportion to the variation of the air tension. The valvej is connected by link L" to the movable bellows-board of a pneumatic motor, N This pneumatic motor is in constant connection with the air of the bellows and closes against its spring P in proportion to the tension of the air. The movement thus produced acts on the valvej and closes more or less in accordance with the air-tension the windway 2'. This preserves an invariable movement of the wind-wheel when the valve in is set at any given point. Fig. 7 a diagram showing a plan of the windway and automatic valve j, the dotted lines showing the position ofthe valve when partly closing the windway.

'in combination with a musical instrument it is better in the elongated form shown in Fig. 4. With this form of opening, as R, much less noise is produced by the passage of the air, and a less amount of air is required, as it is directed to a line across the extreme end of the fans where it has the greatest amount of leverage. The difierence in the amount of noise produced by the rushing wind between this shape of orifice and a circular one is very great, making the construction shown very desirable.

The air from the motor may pass through chamber a to the aperture t, or by a more direct connection, as desired.

As the movement of the sheet is somewhat accelerated by the increase of the roll E in winding, I apply a retarding device as follows: Pulley O is on an extension of roll E, and a narrow tape, M, winds on the pulley as the music-sheet winds on roll E. A spring friction-piece, F, bears against the face of the tape, and as the size of the roll of tape M in creases so does. the pressure of the frictionpiece on the tape increase. The tape M and its winding devices may bear any proportional relation to the music-sheet and its winding devices, and may be permanently or detachably connected therewith.

In my application No. 163,190, filed April 23, 1885, I show and claim certain modifications of the valve-controlling mechanism and of the friction sheet-retarding device. The present application is a division of said application N 0. 163,190, with additional features.

I do not herein claim the combination, with a take up roller for the music-sheet, of a windwheel motor inclosed in a drum, the same being claimed in my application No. 163,190, filed April 23, 1885.

In my said application filed April 23, 1885, No. 163,190, I make broader claims on the pneumatic governing device for a wind-motor and to the wind-wheel incased in a drum and operated by the exhaust, and to a spring friction-brake. Therefore I do not broadly claim these devices in this application.

I claim 1. The combination, with the take-up roller for the music-sheet, of a wind-motor, a valve for controlling the same, the valveseat having its opening varying in width at different points to facilitate graduation of the movement of the motor.

2. The combination, with the take-up roller for the music-sheet, of awind-motor, a valve for controlling the same, the valve-seat having its opening Varying in width at different points, and the valve having an opening tnerethrough, substantially as specified.

3. The combination, with the wind-motor for the music sheet of a mechanical musical instrument and its bellows, of a valve operated automatically by means of the air of the bellows to varydthe supply of air for the motor in accordance with the variation of airt'ension of the bellows.

4. The combination, with the wind-motor, of the windway and its valve and the automatic pneumatic motor N substantially as and for the purpose specified.

5. The combination, with the sheet-winding roll, of a supplementary tape and a friction device bearing on the surface-of said tape.

6. In combination with-the sheet-winding mechanism of a mechanical musical instrument, a wind-wheel motor and a cylin'drical casing iuclosing the same, said casing having a port in its periphery elongated in the direction of the length of the cylinder, asset forth.

In testimony whereof I affix my signature in presence of two witnesses.

MERRITT GALLY.

Vitnesses:

BERNARD J. KELLY, ROBT. A. GALLY. 

